// CSE 143, Winter 2012
// This program hires and fires teaching assistants based on their experience.
// It demonstrates the use of the PriorityQueue data structure.

import java.io.*;
import java.util.*;

public class FiringSquad {
	public static void main(String[] args) throws IOException {
		Queue<TA> lazyBums = new PriorityQueue<TA>();
		
		// read all current TAs from a file "tas.txt"
		Scanner in = new Scanner(new File("tas.txt"));
		while (in.hasNext()) {
			String name = in.next();
			int exp = in.nextInt();
			TA ta = new TA(name, exp);
			lazyBums.add(ta);
		}
		
		// FIRE all TAs with <= 2 quarters of experience
		System.out.println(lazyBums);
		int fired = 0;
		while (lazyBums.peek().getExperience() <= 2) {
			lazyBums.remove();   // Donald Trump: "YOU'RE FIRED!"
			fired++;
		}
		System.out.println("fired " + fired + " TAs.");
		System.out.println(lazyBums);
		
		// hire an equivalent number of new replacement TAs from "replacements.txt"
		Scanner in2 = new Scanner(new File("replacements.txt"));
		while (in2.hasNext() && fired > 0) {
			String name = in2.next();
			int exp = in2.nextInt();
			TA ta = new TA(name, exp);
			lazyBums.add(ta);
			fired--;
		}
		
		// print all TAs in increasing order of experience
		System.out.println();
		while (!lazyBums.isEmpty()) {
			TA ta = lazyBums.remove();
			System.out.println(ta);
		}
	}
}